Datasheet

PN512 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 5.2 — 16 June 2016
111352 27 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
8.2.1.5 CommIRqReg
Contains Interrupt Request bits.
Table 25. CommIRqReg register (address 04h); reset value: 14h, 00010100b
7 6 5 4 3 2 1 0
Set1 TxIRq RxIRq IdleIRq HiAlertIRq LoAlertIRq ErrIRq TimerIRq
Access
Rights
w dydydy dy dy dydy
Table 26. Description of CommIRqReg bits
All bits in the register CommIRqReg shall be cleared by software.
Bit Symbol Description
7 Set1 Set to logic 1, Set1 defines that the marked bits in the register CommIRqReg
are set.
Set to logic 0, Set1 defines, that the marked bits in the register CommIRqReg
are cleared.
6 TxIRq Set to logic 1 immediately after the last bit of the transmitted data was sent out.
5 RxIRq Set to logic 1 when the receiver detects the end of a valid datastream.
If the bit RxNoErr in register RxModeReg is set to logic 1, bit RxIRq is only set
to logic 1 when data bytes are available in the FIFO.
4 IdleIRq Set to logic 1, when a command terminates by itself e.g. when the
CommandReg changes its value from any command to the Idle Command.
If an unknown command is started, the CommandReg changes its content to
the idle state and the bit IdleIRq is set. Starting the Idle Command by the
-Controller does not set bit IdleIRq.
3 HiAlertIRq Set to logic 1, when bit HiAlert in register Status1Reg is set. In opposition to
HiAlert, HiAlertIRq stores this event and can only be reset as indicated by bit
Set1.
2 LoAlertIRq Set to logic 1, when bit LoAlert in register Status1Reg is set. In opposition to
LoAlert, LoAlertIRq stores this event and can only be reset as indicated by bit
Set1.
1 ErrIRq Set to logic 1 if any error bit in the Error Register is set.
0 TimerIRq Set to logic 1 when the timer decrements the TimerValue Register to zero.